[libvirt] [PATCH] docs: correct setmem text plus expand setmaxmem text

Justin Clift jclift at redhat.com
Wed Jan 26 05:10:51 UTC 2011


On 20/01/2011, at 11:30 PM, Matthias Bolte wrote:
> 2011/1/19 Justin Clift <jclift at redhat.com>:
>> This completes the man page updates required for BZ # 622534:
>> 
>>  https://bugzilla.redhat.com/show_bug.cgi?id=622534
> 
>> -Change the maximum memory allocation limit in the guest domain. This should
>> -not change the current memory use. The memory limit is specified in
>> -kilobytes.
>> +Change the maximum memory allocation limit for an active guest domain.
>> +
>> +Some hypervisors require a larger granularity than kilobytes, and requests
>> +that are not an even multiple will either be rounded down or rejected.  For
>> +example, vSphere/ESX rejects the parameter unless the kB argument is evenly
>> +divisible by 1024 (that is, the kB argument happens to represent megabytes).
> 
> Actually vSphere/ESX truncates in this case. It rejects in other cases
> (virsh define).
> 
> As Dan suggested, I might change this to round up.

With vSphere/ESX, does the virsh "setmaxmem" command work on running guest
domains, or only inactive ones, or ?

I'd *really* like to update the man page docs around this in the next few days, and
I'm still not sure what this command is actually doing in the real world.  Heh. ;(




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